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Cimpor Group

Other Products :

	Ordinary Portland Cement 53 grade (OPC) as per BIS / BS / ASTM / SLS standards
	Oridinary Portland Cement 43 grade (OPC)
	Sulphate Resisting Portland Cement (SRPC)
	Railway Sleeper Manufacturing Cement (53-S Grade OPC)
	Oil Well Cement Class 'G' HSR (as per API specifications)

Our Customers

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Portland Pozzolana Cement

Premium Composite Cement

Portland Pozzolana Cement is manufactured by intergrinding well-burnt OPC Clinker with 15 to 35 % Pozzolana and required percentage of Gypsum to the fineness of not less than 300 m2 /Kg.

Portland Pozzolana Cement is new generation cement. It contains high reactive Silica (HRS) to enhance ultimate performance of concrete. Pozzolana is essentially a siliceous material in finely divided form with the presence of water, that react with Calcium hydroxide at ordinary temperature liberated during the hydration of Portland Cement to produce stable, cementitious compounds. These compounds contribute to strength and water tightness of Cement and are specially suitable for Dams and mass construction like foundation.

ADVANTAGES

	Higher durability of concrete structure due to less permeability of water.
	More resistance towards the attack of alkalies, sulphates, chlorides, chemicals.
	Better workability.
	Low heat of hydration.
	Less Cracks.
	More resistance towards leakages.
	Due to more fineness, PPC have better cohesion with aggregates and make more dense concreteness.
	Comparative lower Water-Cement ratio provides an added advantage for the further increase of compressive strength of the concrete.
	Portland Pozzolona Cement has a lower specific gravity and therefore weight for weight produce a higher yield of concrete.
	Better surface finish.

IDEAL APPLICATIONS

	Plaster & Brick work.
	Marine works.
	Mass concrete works - Dams, Canals, Spillways.
	RCC work in residential and commercial construction

BIS SPECIFICATIONS AND SDCC NORMS OF KAMALSTAR CEMENT (Portland Pozzolana Cement)
Sr.No.	Description	Unit	Req. as per IS-1489 ( P- 1 ) 1991	SDCC Norms
A) CHEMICAL COMPOSITION
1.	Insoluble Residues (IR)	%	X*+ (4.0(100-X)/100)	13.0 Min
2.	Magnesium Oxide(MgO)	%	6.0 Max	3.0 Max.
3.	Sulphuric Anhydride(SO3)	%	3.0 Max.	2.75 Max.
4.	Loss on Ignition(LOI)	%	5.0 Max	4.0 Max.
5.	Chloride (CI-)	%	0.05 Max.	0.05 Max
B) PHYSICAL PROPERTIES
1.	Specific Surface	m2/kg	300 Min.	300 Min.
2.	Soundness (Expansion)
	a) By Le-Chatelier	mm	10.0 Max.	5.0 Max.
	b) By Autoclave	%	0.8 Max.	0.2 Max
3.	Setting Time
	a) Initial Set	Minute	30 Min.	60 Min.
	b) Final Set	Minute	600 Max.	250 Max.
4.	Compressive Strength
	a) 3 days	MPa	16 Min.	32 Min.
	b) 7 days	MPa	22 Min.	42 Min.
	c) 28 days	MPa	33 Min.	55 Min.
5.	Drying Shrinkage	%	0.15 Max.	0.12 Max.
Note: * X = Declared percentage of Pozzolana in Portland Pozzolana Cement by weight. Pozzolana constituent shall not be less than 15% and more than 35% by mass of PPC.

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